Plastic composition and method for making the same



e, U M TBS wILLI'AivIv-wArson, or SAN nme cALIror'm A, issmsoaflda civil-HALF rosAn DIEGO CONSOLIDATEDYGAS AND ELECTRIC coraramnjor SAN D EGo', CALIFORNIA,

A. coRroRArIoN or CALIFORNIA,

No Drawing.

To all whomfe'tmay concern: I

Be it lmown that I, WILLIAM V. WA'r soN,

a citizen of the United States, residing at and the objects of my invention are: first, to

provide a plastic composition for roads, sidewalks and surfacing purposes; second, to provide a composition for such purposes which is composed principally of gasplant refuse and by products of very little value otherwise; third, to provide a composition of this class which is very durable, strong and is not brittle and liable to chip or break; and fourthto provide a composition of this class and a method for .making the same which is very easy and economically compounded and applied.

With these and other objects in view as will appear hereinafter my invention consists of a certain novel plastic paving composition and a certain novel method of making plastic paving composition as will be hereinafter described in detail and particularly set forth in'the appended claims.

My invention consists-in preparing a composition which is composed principally of worthless refuse from gas plants as follows: gas plant carbon, briquet dust, usually termed lamp black, tar from oil and water gas, refuse sponge from gas plant purifiers which contains from 30 to sulfur, in the form of sulfids, etc., and ordinary river bed sand and gravel.

The refuse from gas plant purifiers consists of a sponge which is made as' follows: by taking wool shavings and adding sulfate of iron, slaked lime and oxidized iron filings and .turnings to form iron oxid by weathering, which absorbs and collects all the poisonous, tarry oils, and sulfur from the sulfureted hydrogen, naphthalene and other antiseptic and poisonous combinations in crude burning gas. 7

This refuse discarded from the purifiers of gas plants contains approximately 40 to 50% of sulfur a ulfi of naphtha ene Specification of Letters Patent.

7 refuse sponge from gas purifiers, sand, oil

' rLAs'rIc COMPOSITION AND METHOD son MAK NG mag a.

Patented N v; 29,1921.

' Application'filed September 9, 1920. Serial No. 409,061.

and varying-[quantities of tar containing 55 ammonlacal liquor and naphtha, v carbolic oil, creosote oil, anthracene,; pitchjand asphalt, also traces of .poisonousPrussian blue and cyanid combinations. V

In preparing the composition I prefer to use the ingredients in about the following proportions, dry weight: gas plant puri-. fier sponge, 1 part; sand or sand and gravel, 1 part; oiland water-gas tar, l part; lamp black, part. Y 6

These ingredients are. mixed, stirred, de- 1 watered and fluxed by heating to about 200 degrees centigrade, then while hot applied for pavement, floors, walks or other pure poses for which cement and concrete are used. f

It will here be noted that it is also appli-' cable for use in place of cement, concrete, asphalt-um tar, etc., such as sewer and gas pipe as it is unaffected by water, either fresh or salt, acids, alkalis, illuminating and heating gas, vehicle lubricatingoils, etc.

This composition may be' dehydrated and allowed to cool and reheated for final use, smoothed, tamped or rolled'as desired.

The sulfur, naphthalene, cyanid and other gas constituents in the gas purifier sponge combine at sulfur fusion between 100 and 200 degrees centigrade into a plastic mass that results in a remarkable composition similar to the vulcanizing of rubber, producing a-plastic composition of very high tensile strength, the degree of hardness being dependent upon the moisture contents of the material. 1

It will be here noted that it is'preferred to prepare the composition with the four ingredients as hereinbefore stated, however, experiment discloses that a plastic composition which might be practical'though not so effective may be produced without the use of the lamp black and it is "therefore desired to include in the application the composition without theuse of the ingredient, lamp black as well as with it.

Having thus described my invention what I claim as new and desire to secure by'Letters Patent is: I

1. A plastic composition, consisting of and water gas tar, and lamp black;

2. A plastic composition, consisting of efii r s from a P rifier n Pa a sand, one part; oil and Water gas tar, one

v part and lamp black, one-half part.

8.]The herein described 'method of preparin'g'plastic pavement, consisting in mixing refuse sponge from gas purifiers, sand and gravel, oil and Water gas tar, and lamp blacl, thoroughly agitating the same, de- Watering and fiuxing by heating to'about 200 degrees Centigrade and While hot applied.

4. The herein described method of preparing-plastic pavement, consisting in mixing refuse sponge from gas purifiers, sand and gravel, oil and Water gas tar, lamp black,

thoroughly agitating thesamenheating, de-

Watering, then allowingitto cool and reheating to about 200 degrees .oentigrade for final use. x

5. A plastic COI IipOSitiO li, comprising 'refuse sponge from" gas purifiers, fine particles of stone, and oiland; WHJSQI gas tar. I

6. A plastic composition, comprising refuse sponge from gas purifiers, fine particles of stone, and oil and Water gas tar, in substantially equal proportions.

In testimony whereof, I. have hereunto set my hand at San Diego, California, this 3fday; of September, 1920. 7 p

WI LIA v. WATSON." 

